Every move you make, every smile you fake, Facebook will be watching you

On top of what you're doing, eating, listening to reading and in a relationship, Facebook wants to know where you are, at any given moment.

Which is why it is developing a smartphone app to track users' locations.

According to "two people familiar with the matter", the app is scheduled to be released in March, Fairfax reported.

It is reportedly designed to help users locate nearby friends, which is fine, except that the program would continue to run on your phone even if the app isn't open.

The app could help Facebook sell advertising based on users' whereabouts and daily routines.

Facebook already records the location of users when they post updates on their phones, however location tagging is an opt-in feature and users have the choice whether to reveal their location or keep it a secret.

This app would change that.

The social network has already been the subject of fierce criticism over its privacy policies. No doubt this app will tip the scales of public opinion.

News of the app comes just months after it released a "sexting" app which allowed users to send photos to each other which would disappear after 10 seconds or less, and less than a month after launching a search engine which just made it a whole lot easier to stalk and or embarrass people.